Currently I live and work on the west coast of California in a mediterranean climate within 5 miles of the ocean. At one time dense pine forests grew along the California coast inland 40 miles in this area. These were logged about 100 years ago, changing the climate dramatically. Currently in a drought cycle, deep aquifers in this area are drying up. Long term studies have indicated this area will not have fresh water aquifers available within 20 years. Permaculture application in this area is needed in order to maintain a healthy human population here.